Steam-trap.



G. U. MERRILL.

STEAM TRAP.

APPLICATION FILED SEPT. 13, 1913.

R, Ill

2 SHEETS-SHEET 1.

INVENTO 4/577;

ATTORNEY 2::TNE88E8 I'HE NORRIS PETERS C0,. PHOTO-LITHO.. WASHINGTON.L). L.

G. U. MERRILL. STEAM TRAP.

APPLICATION FILED SEP'1.13,1918.

1,108,603. Patented Aug. 25, 1914.

2 SKEETSSHEET 2.

' WITNESSES 1 INVENTOR, Q mnill/llarrz' ATTORNEY.

THE NORRIS PETERS CO, PHOTO-LITHO, WASHINGTO N. D- C UNITED STATESPATENT OFFICE.

GRANT U. MERRILL, 0F PATERSON, NEW JERSEY.

STEAM-TRAP.

Application filed September 13, 1913.

To all whom it may concern:

Be it known that I, GRANT U. MERRILL, a citizen of the United States,residing at Paterson, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Steam-Traps, ofwhich the following is a specification.

This invention relates to steam traps, and particularly steam traps ofthe class in which a floating bucket controls the escapeof theaccumulating water, and it consists in certain improvements in suchapparatus having for their object to better the construction andincrease the efficiency thereof.

In the accompanying drawings, Figure 1 is a plan of the improvedsteam-trap; Fig. 2 is a vertical sectional view through one of the potsin substantially the plane of its inlet and outlet; Fig. 3 is anelevation of the inlet side of the trap; and, Figs. 4 and 5 illustratecertain details.

In carrying out my invention I provide a unitary structure a comprisingtwo pots b 6 each open at the top and separated from each other by thepartition 0. Each pot has an inlet passage (Z in its back wall and,leading downwardly and then outwardly through its front wall, an outletpassage 6. On each pot is removably secured a coverstructure including aplate 7 and a dome g removably secured on the plate, said plate having aport 71, leading from the dome to and communicating with the passage 6corresponding to said pot and forming a passage with means (to bedescribed) affording communication between the dome and the interior ofsaid pot.

The trapping means may be any accepted type, that shown in the drawingsbeing one well known and comprising the following elements: The pivotedbucket z floating in the water accumulating in the pot normally holdselevated a stem 7' whose upper end obturates an orifice 7c in aninverted cupshaped valve Z fitted into a cup m fixed on the stem j, saidvalve taking against a seat it formed at the upper end of a tubularstructure 0 that is suitably fitted in and extends through the plate fand depends suitably below the water level in the pot. Normally thepassage through structure 0 is closed by the valve, but when the wateraccumulates in the pot sufficiently to overflow into the bucket, on thedescent of the latter and the valve the pressure of the steam forces thewater in the bucket up through said structure, past Specification ofLetters Patent.

Patented Aug. 25, 1914.

Serial No. 789,670.

the valve, into the dome, from whence it finds outlet via the port itand passage 6; as soon as the buoyancy of the bucket is restored bydepletion of the water body therein, the incidental rise of the bucketreseats the valve, thus stopping the flow past the valve.

The points of inlet for the two passages 0Z are afforded by bosses 79formed on the back of each pot. Removably secured thereto are theflanges of a two-way fitting q having a substantially straightintermediate portion provided with a threaded nipple r to receive thepipe leading from the system to be drained. Between the nipple g andeach extremity of the fitting is a valve seat or spider .9 againsteither of which valve seats may bear a common valve 25 carried by a stemto carrying a hand-wheel 22 and having preferably a threaded connectionwith a part, as 'v, of the fitting. Upon shifting the valve one way orthe other the flow through the fitting may be established in onedirection and cut off in the other, as will be obvious. The passages ehave their outlet ends terminating in bosses w like the bosses p, andremovably secured to these bosses are the flanged ends of a fitting 09substantially identical to the fitting g and having a nipple for theeduction pipe 3 valve seats, a valve, a stem carrying the valve, ahandle, a handwheel on the stem and a part with which the stem has athreaded connection, all substantially identical to the correspondingparts appertaining to the fitting g.

In view of the foregoing it will be apparent that, assuming that oneside of the steam-trap has been in operation and for some reason thefiow therethrough must be stopped, the valves of the fittings g and a:are moved so as to cut off the flow through said side of the trap; thisleaves the flow to continue uninterrupted through the other side of thetrap, and in the meanwhile acoess may be had to the interior of the sideof the trap which has been cut off by removing its cover structure. Eachbucket 71 is commonly pivoted at the back and bottom thereof in a legdepending from the cover structure. This leg, cast integral with thecover structure, sometimes becomes broken off in shipping the trap.According to my construction the under side of the cover structure has adovetailed socket .2 opening rearwardly and the leg 2 has at its upperend a dovetailed head or tongue 3 adapted to be entered into said socketto alimit afforded by the stop f thereof. lhus the leg becomes aseparable piece and may be detached from the cover structure inshipping. When the parts are assembled the leg is kept in place bytherear wall of the pot, which downward movement, always at the same;level, by contact of its foot 7 with a bridge 8 spanning the channel.Steam admitted at d may be employed to clear the channel inf removingthe sediment, its action being concentrated on the channel by the rearverti-' cal ribs 9 of the leg 2, which ribs serve also; to strengthenthe leg. E

Having thus fully described my inven-i tion, what I claim as new anddesire to sej cure by Letters Patent is I,

1. In a steam-trap, a hollow structure hav-i ing an inlet and meanswhereby to discharge the water accumulating in said structure and alsohaving a removable cover, trapping Copies of this patent may be obtainedfor The bottom of each pot is prefermeans for the discharge meansincluding a floating bucket housed in said structure, and a dependingleg to which said bucket is pivoted removably attached to the cover andheld against removal by said structure in the'assembled disposition ofsaid structure and cover. a.

2. In a steam-trap, a hollow structure having an inlet in one sidethereof and means whereby to discharge the water accumulating in saidstructure, and trapping means for the discharge means including afloating bucket, said structure having a depending leg opposite andrelatively close to the inlet affording a pivot for the bucket and saidleg having a vertical channel on the side thereof adjoining the inlet,and said structure also having a sediment channel substantially alinedwith said channel of the leg and under the bucket, an outlet in v theside of'said structure opposite-that having the inlet and communicatingwith said channel, and means to close sald outlet.

In testimony whereof I affix my signature in presence of two witnesses.

GRANT U. MERRILL.

l/Vitnesses:

JOHN W. STEWARD, NM. D. BELL.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

